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Afina-wow [57]
3 years ago
12

How does the electron structure of atoms change when they form chemical bonds

Chemistry
1 answer:
andriy [413]3 years ago
3 0
For ionic bond
The metal atom will lose electrons to form cations and the non metal atom will gain electron.egNaCl
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A carbohydrate comes from a chain of carbon atoms with an H2O associated with each other 
5 0
4 years ago
calcium is obtained industrially by electrolysis of molten cacl2 and is used in aluminum alloys. how many coulombs are needed to
Vinvika [58]

It takes 107 minutes 22 seconds and 96500 coulombs of charge produce 20.2 g of calcium.

The balanced equation for the reaction is,

CaCl _{2} \:→ \: Ca ^{ 2 + }  + 2Cl {}^{ - }

The half-reaction of calcium is,

Ca ^{2 + }  + 2e ^{ - } → \: Ca

Mass of calcium = 20.2 g

The molecular mass of calcium = 40 u.

The number of moles calcium are,

Number \: of \: moles =  \frac{mass}{molecular \: mass}

=  \frac{20.2}{40}

= 0.5 \: moles

One mole of Calcium is produced by 2 moles of electrons.

So, 0.5 moles of Calcium produce,

= 0.5 \times 2

= 1 \: mole \: of \: electron

The charge required to produce 202 g of calcium is,

=  1 \:F

= 1 \times 96500 \: C

= 96500 \: C

Current = 15 A

The time taken to produce 20.2 g of calcium is,

I  =  \frac{Q}{T}

T =  \frac{96500}{15}

= 6433.3 \: s

= 107 \: minutes \: 22 \: seconds

Therefore, 96500 columns of charge are required to produce 20.2 grams of calcium. And it takes 107 minutes and 22 seconds.

To know more about charge, refer to the below link:

brainly.com/question/14713274

#SPJ4

7 0
2 years ago
Which of the following statements best describes why a chemical change is different from a physical change.
Butoxors [25]

Answer:

C) Chemical changes involve formation of a new substance while physical change only impacts appearance or form.

Explanation:

The obvious difference between a chemical change and physical change is that in a chemical change new substances are produced while in a physical change, the form of the compounds are altered.

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  • In a chemical change, a new kind of matter is formed. It is accompanied by energy changes.
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A shiny piece of metal has a volume of 315 cm3 and a mass of 851 g. what is the density of the metal?
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Answer:

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8 0
1 year ago
Read 2 more answers
Why are earthquakes different in New Madrid than in California.
maw [93]
Well it depends how close the places are to the edges of tectonic plates. Also the damage caused from the Earthquakes has to do with how sturdy the buildings are and whether they were built to withhold such strong forces.
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2 years ago
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